Just a question, but at what price do condensers really start sounding different?
THIS is the age-old question and has been batted around and around since the advent of online recording gear sites such as this one.
Several important and mostly over-looked factors shape this answer...and as with anything YMMV...
One is the environment you wish to record in. ALL LDC's mics and also some of the more sensitive SDC mics will exhibit different responses in different environs.
Two is the source you are wanting to capture. ALL LDC mics have a frequency response curve that will "stamp" ,if you will, all sources put in front of them with their signature. A lot of advice given here was about trying different mics on whatever you're recording in order to 'know' what they will sound like for YOU.
And the third is quality of components in the mic build. All mics are not built to the same specs although many many are built to a standard circuit design and simply implemented to a price-point. It is here where the divergence of sound quality begins to show.
If you are in a situation where you cannot try before you buy, then your online research should include a visit to the manufacturers site and learn as much as possible about their techniques for building their offerings....a check into online sound bites with the gear you seek....and , of course, questions on sites like this one seeking opinions of those who have actually USED the piece in question.
Unfortunately there's also the factor of spreading information by those who are simply repeating what they have "heard or read about" with no hands on experience to bolster their views.
All that being said....and this is my experience on this....LDC mic's don't really stand out as different from each other with similar builds around similar circuit designs unless the builder/designer takes into account the "voicing" of a mic in a way that makes it more usable for a specific job rather than trying to cover a huge extended realm of sources. As has been suggested here, the use of EQ can mitigate a lot of uses with a small amount of tweaking. Some of the problems with this is some of the less expensive mic builds do not take to EQ'ng well at all and you wind up chasing a sound down the wormhole without the results you seek. Your list of mics you have experienced would be in this category. Since you have said you like the "natural" feel you got from the Beta58, I would suggest to you at this price point and as a beginning condenser mic for a voice, a Shure KSM 32. Bullet proof...sounds great...very smooth...can be had used for a bit more than your $300 and will not depreciate although I know very few people that sell theirs.